body {
  margin: 0;
  padding: 0;
}

.concept {
  position: absolute;
  background-color: #fff;
  padding: 5px 10px; 
/*  padding: 0.2em 0.5em; */
  border: 1px solid #ccc; 
  border-radius: 5px;
  font-size: 0.8em;
}

#container {
  background-color: #eee;
}

#inputForm {
  position: fixed;
  right: 0;
}

#concepts {
  width: 100%;
  height: 400px;
  border: 1px solid #999;
}

.relation {
  position: absolute;
  background-color: #ddd;
  opacity: 0.8;
  padding: 2px 5px;
  font-size: 0.6em;
}
